I have many different models with different types of fields. I want to use foreign key for multiple models. Like:
class Model1(models.Model):
title = models.TextField()
body = models.TextField()
class Model2(models.Model):
tag = models.CharField(max_length=200)
uploadedDate = models.DateTimeField(auto_now_add=True)
class MainModel(models.Model):
content = models.ForeignKey([Model1, Model2], on_delete=models.CASCADE) # this will give error
How can I do this?
models.py
from django.contrib.contenttypes.models import ContentType
from django.contrib.contenttypes.fields import GenericForeignKey
class MainModel(models.Model):
target_ct = models.ForeignKey(ContentType,
related_name='target_obj', on_delete=models.CASCADE)
target_id = models.PositiveIntegerField()
target = GenericForeignKey('target_ct', 'target_id')
now from your main model you can access any model you want.
To use it let us say you have an instance like this.
model1 = Model1.objects.first()
to pass this to your MainModel you can just do something like this.
MainModel.objects.create(target=model1)
